Rolls for rolling



3 Sheets-Sheet 1.

A. J. MOXHAM.

ROLLS FOR ROLLING GIRDER RAILS.

(No Model.)

N0. 360,036. Patented Mar. 29, 1887.

(No Model.) 3 Sheets-Sheet 2. A. J. MOXHAM.

ROLLSJEOR ROLLING GIRDER RAILS.

No. 360,036. Patented Mar. 29, 1887.

(biinesses x Llihngripher. wmimm o. c.

(No Model.) 3 Sheets-Sheet 3..

A. J. MOXHAM.

ROLLS FOR ROLLING GIRDER RAILS.

No. 360,036. Patented Mar. 29, 1887.

PhOhrUlMgnphar, wuhinglon, D. c.

Elmira STATES Erica,

" ATENT ROLLS FOR ROLLING GlRDER-RAlLS.

SPECIFICATION forming part of Letters Patent No. 360,036, dated Miami: 29, 182.7.

Application filed August I2, 1586. Serial No. 210,667. (No model.)

To (LZZ whom it may concern:

Be it known that 1', ARTHUR J. Moxnimr, of Johnstown, in the county of Oambria and State of Pennsylvania, have invented a new and useful Method of and Rolls for Rolling Side-Bearing Glider-Rails, which invention is fully set forth and illustrated in the following specification and accompanying drawings.

The object ofthis invention is to reduce to a minimum the number of dummy passes required in rolling side-tram girder-rails, and also, if desired, to dispense with the use of tongues in said passes.

The invention will first be described and distinguished, and then particularly set forth in the claims.

In the accompanying drawings, Figure 1 indicates in side elevation an upper and lower roll provided with four passes, as indicated by the numbers 1 2 3 4. The said figure also shows the upper roll in end View. Figs. 2 and 3 show, each in side elevation, a pair of rolls provided, respectively, with three passes, indicated by the numbers 5 6 7, and five passes, indicated by the numbers 8 9 10 ll 12, making a total of twelve passes in the three collective sets of rolls, the shape of the completed rail being indicated by the shape of the final pass, No. 12.

The rolling is effected by entering the hot bloom first into pass No. 1, and after passing it therethrough, then successively passing the hot metal in regular order through each remaining pass, as will be well understood, upon inspection of the drawings, by those skilled in rolling-mill practice.

The essential difference in the treatment of the metal in effecting the rolling in these rolls from that heretofore practiced will now be pointed out.

It has heretofore been customary to quickly work down in the rolls that portion of the metal which subsequently forms the side tram of the rail, and to produce this effect by providing tongues in the dummy passes, these passes being (as is well known to thoseskilled in the art) those in which a special part of the entering mass is subject to a widening or transverse actionthat is to say, the metal is made to flow across the rolls, instead of being elongated or rolled out in the direction of the rolls rotation. This widening action is genmetal intended for the side tram of the rail is more gradually effected, and any necessity for the presence of said tongues is obviated, although thcir presence is optional.

In using a dummy pass divided by a tongue, as above mentioned, wherever there is a lack of width of head of railthat is, extreme distance across from outside of head proper to outside of side tram-such additional width is obtained by a dummy action on the metal, forming subsequently the finished rail on both the head and side tram portion. The width of tram in this case is limited by the scope of the dummy action on the tram side of the metal. In practice it has been found that the desired width or lateral displacement can only be effected by an amount of pinching in a vertical plane, Which does not leave enough metal in this portion of the billet to secure a properly filled-out tram, such rolls forming as a finished shapca rail whose tram has its an der side pinched or off set, instead of being regularly and truly filled out to the section or shape of rail required. Now, in order to obviate this defect, the whole lateral action of the dummy pass No. 6 used in this invention, so

far as displacement of metal is concerned, is

thrown upon one side of said pass-the tram side-and the full width of the head proper and tram are thus secured without sacrificing any of the necessary thickness of the tram, a greater body of the metal being thus acted on to accomplish the desired purpose than in the other case. Advantage is thus taken of the tendency of the rolls to wire-draw the metal away from the extreme end of the side tram, and by concentrating the whole dummy action on the side-tram portion of the metal the desired length and proportion of tram are secured to perfection in the finished rail. So efficient has this one-sided-action dummy pass been found in practice that girder-rails may be rolled with a less number of such dummy passes than by any other plan of rolling, so much so that in some cases, as shown in the drawings at pass N0. 6, but one of such dummy passes is necessary; though in some cases, depending upon the proportion and shape of the rail, it may be advantageous to increase the number of such dummy passes.

The rolls may, if desired, be mounted in their housings three high, instead of two high, as shown in the drawings.

Having thus fully described my said in1- provement as of my invention, I claim- 1. The method hereinbefore described of rolling side-bearing girder-1'ails, consisting in rolling down the metal forming the side tram in rolls provided with passes, in one or more of which that portion of the metal forming the offset part or head of the rail is subjected to elongating action, and that portion forming its side tram is subjected to displacing or 2. A set of rolls for rolling girder-rails, provided with a series of passes having the respective configurations described, and illustrated in the aceompanyingdrawings, numbered thereon from 1 to 12, inclusive, substantially as and for the purposes set forth.

ARTHUR J. MOXH AM.

\Vitnesses:

FRANCIS 1?. REILLY, JENNIE TURNER. 

